TLA Systems has released DragThing 5.1, the latest version of its popular Dock application for Mac OS X. The updated version includes: new dock window styles like metal and translucent black; rewritten preferences and Dock storage code, with Docks now saved as separate files, and support for XML exporting and importing; improved Desktop Trash; full control over how Exposé affects your Docks and the Desktop Trash; improved contextual menu previews; new AppleScript support, and more. DragThing 5.1 is a free upgrade for registered users of DragThing 5, US$12 for registered users of earlier versions, and $29 to register for new users.